Abstract
A field study was conducted during 2000–2001 and 2001–2002 at the Central Potato Research Institute Campus, Modipuram, India, in order to increasing the processing-grade tuber yield of India’s first ever developed processing potato cultivars, Kufri Chipsona-1 and Kufri Chipsona-2. Tuber yield and post-harvest quality characteristics were evaluated in response to five N levels (0, 90, 180, 270 and 360 kg N ha-1). The crop growth traits (stem number, plant height and compound leaf number) responded positively to N application, whereas the effect of N fertilization on processing-grade tuber number, total tuber number per ha and tuber number per plant was quadratic. There was a steady increase in tuber weight per plant, processing-grade tuber yield, total tuber yield and biomass yield in response to N application. Kufri Chipsona-1 produced a 23.6% higher tuber yield per plant than Kufri Chipsona-2. Agronomic N use efficiency decreased linearly with increased N doses. Specific gravity and tuber dry matter percentage responded positively to N application, while crisps colour (at harvest and after storage) and reducing sugars remained unaffected. Cultivar was the major factor that influenced the tuber quality parameters (specific gravity, crisps colour). Higher values of these quality traits were observed in Kufri Chipsona-2 as compared to Kufri Chipsona-1. Net income and benefit cost ratio (B:C) indicated that Chipsona cultivars should be fertilized with 270 kg N ha-1 for realizing higher processing-grade yields and desirable quality tubers.
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Abbreviations
- AEN :
-
agronomic N use efficiency
- B:C:
-
benefit cost ratio
- DAP:
-
days after planting
- EOD:
-
economic optimum dose
- FBY:
-
fresh biomass yield
- FTY:
-
fresh tuber yield
- HI:
-
harvest index
- NI:
-
net income
- Rs.:
-
Indian Rupees
- TC:
-
total costs
- TR:
-
total return
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Acknowledgements
The authors are thankful to Dr. N.C. Upadhayay for extending the laboratory facilities, Dr. Sanjay Rawal, Dr. Arvind Shukla, Dr. Devendra Kumar and Dr. Luthra for suggestions and help, Mr. Ramesh Chand for extending help in field and laboratory work and Mr Dinesh Singh for helping in regression analysis.
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Kumar, P., Pandey, S.K., Singh, B.P. et al. Effect of Nitrogen Rate on Growth, Yield, Economics and Crisps Quality of Indian Potato Processing Cultivars. Potato Res. 50, 143–155 (2007). https://doi.org/10.1007/s11540-008-9034-0
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DOI: https://doi.org/10.1007/s11540-008-9034-0